Bluetooth is a network technology that connects mobile devices wirelessly over a short-range to form a personal area network (PAN). They use short-wavelength, ultra-high frequency (UHF) radio waves within the range 2.400 to 2.485 GHz, for wireless communications.
Usage of Bluetooth can be broadly categorized into three areas −
Access Points for Data and Voice − Real-time voice and data transmissions are provided by Bluetooth by connecting portable and stationary network devices wirelessly.
Cable replacement − Bluetooth replaces the need for a large number of wires and cables of wired networks. The connections can be made instantly and are retained even when the devices are not within range. The range of the devices is typically 10m. However, the range can be extended by using amplifiers.
Ad hoc networking − Ad hoc networks are formed impromptu by the network devices bypassing the need for a central access point like a router. Bluetooth networks are ad hoc in nature since a Bluetooth enabled device can form an instant connection with another Bluetooth enabled device as soon as it comes into range.
Some of the common applications of Bluetooth are −
In laptops, notebooks and wireless PCs
In mobile phones and PDAs (personal digital assistant).
In wireless headsets.
In wireless PANs (personal area networks) and even LANs (local area networks)
To transfer data files, videos, and images and MP3 or MP4.
In wireless peripheral devices like mouse and keyboards.
In data logging equipment.
In the short-range transmission of data from sensors devices to sensor nodes like mobile phones.